Connecticut Taxes Explained: Property Credit, Pensions, Remote Work

Updated October 29, 2026

What Connecticut subtracts and what it still taxes

Connecticut starts from your federal numbers and then adjusts them. The instruction booklet for Form CT-1040 lists the subtractions that matter most to retirees.

• Social Security. Benefits are fully exempt when the income on your return is under a limit that depends on filing status. Above that limit they are partly exempt. The booklet has a worksheet, and myconneCT has an online calculator.
• Pensions, annuities and IRA distributions. Filers under an income limit may subtract distributions from defined benefit plans, 401(k), 403(b) and 457(b) plans, and non-Roth IRAs. Roth IRA distributions are left out of that calculation.
• Military retirement pay is fully exempt, and so are survivor benefits. A former spouse who receives a share under a divorce property settlement does not get this subtraction.
• Railroad retirement. Tier 1 and Tier 2 benefits are fully exempt.
• Connecticut teachers' pensions get a partial subtraction. A retired teacher can use the teacher subtraction or the pension subtraction, but the booklet says Connecticut does not allow a double benefit for the same income.

The income limits are numbers the Department updates, so read the current booklet before you rely on any of this.

Who files Form CT-1040, and how to file and pay

A resident files Form CT-1040 if any one of these is true: Connecticut tax was withheld, you made estimated payments, you have a pass-through entity tax credit, you meet the gross income test, you owe federal alternative minimum tax, or you claim the Connecticut earned income credit. For the gross income test, only the federally taxable part of your Social Security counts. Nonresidents and part-year residents file Form CT-1040NR/PY instead.

The return is due the same day as the federal return, April 15 for calendar-year filers. For more time, file Form CT-1040 EXT. The Department says that form extends only the time to file, not the time to pay. A federal extension is a separate request, explained in our extension guide.

You can file through myconneCT, which is free, with other software that supports e-file, or on paper, which is slower. You can pay by direct debit from a bank account, by card with a convenience fee, or by mail with Form CT-1040V.

Connecticut also has a permit rule for paid preparers. The Department says tax preparers cannot provide services for Connecticut income tax returns without a permit, with a few professions exempt. Applicants need a PTIN and proof of training or experience, and they apply online. Read the Department's notice and ask any preparer how they meet it.

The property tax credit and other credits Connecticut adds

Connecticut gives residents a credit for property taxes paid to a Connecticut town or other local government on a primary residence, a privately owned or leased car, or both. Attach Schedule 3 or the credit is denied. The credit has a cap. It only offsets this year's Connecticut income tax, and it cannot be carried forward or refunded. Bills paid during the year generally count, including installments you prepaid. For a leased car, use the January statement from the leasing company.

Two more credits come with strings:

• Earned income credit. You must have claimed the federal credit. Part-year residents and nonresidents do not qualify. The Department reviews these claims, and approval of the federal credit does not mean the state credit is approved.
• Pass-through entity tax credit. A partner or member who gets a Schedule CT K-1 showing the credit must attach Schedule CTPE, or the credit is disallowed.

The Department also warns about preparers who charge high fees or promise a bigger refund for a percentage of the refund. Ask for a flat written quote before you hand over documents.

Working in another state or from a home office

A Connecticut resident who pays income tax to another state can claim a credit on Schedule 2. A qualifying jurisdiction is another state, a local government in another state, or the District of Columbia. Foreign countries and provinces do not count, so Canadian tax does not qualify.

Remote work has its own line in the booklet. Pay for work done from a home office in Connecticut for an employer in a qualifying jurisdiction that uses a convenience of the employer test is treated as income from that jurisdiction. That can support a credit even though you never left home. Finish the other state's return first, because the Connecticut credit builds on it. Complete Schedule 3 before Schedule 2.

Married couples have special rules. When one spouse is a Connecticut resident and the other is a nonresident, each spouse who must file does so as married filing separately. The exception is a couple who file jointly for federal purposes and elect to be treated as residents for the whole year. Our remote worker guide explains multi-state filing in plain terms.

Moving to or from Florida: part-year Connecticut returns

If you move into or out of Connecticut during the year, you file Form CT-1040NR/PY as a part-year resident. Part-year residents do not qualify for the Connecticut earned income credit.

Spouses add a twist. If both are part-year residents with the same period of residency, they may choose a joint or separate return. If their periods differ, they file separately. If one is a part-year resident and the other is a resident or a nonresident, each who must file does so separately.

Keep proof of the date your Connecticut residence ended and the date your new home began. The Florida end of the move is in our moving to Florida guide.

Paperwork and mistakes that slow a Connecticut return

• The use tax line. Goods bought out of state without paying Connecticut sales tax can trigger use tax. The booklet says you must enter 0 on the use tax line if none is due. A blank line means you have not filed a use tax return, and failing to report brings a penalty.
• Missing attachments. Schedules 3, CTPE and CTEITC must travel with the return.
• Underpaid estimates. If withholding and estimated payments fell short, interest may apply. Form CT-2210 helps you work it out.
• Late payment. Tax paid late brings a penalty and interest that grows each month.
• Offsets. The Department may apply an overpayment to penalty, interest or other taxes you owe it, debts to other Connecticut agencies, federal taxes, or taxes owed to other states. Our refund offset guide explains why refunds shrink.

Keep every W-2 and 1099 in one folder, plus your completed federal return, because the Department says to have the federal return in hand before you start.

Working with Zero Fuss Taxes from Connecticut

Connecticut regulates paid tax preparers, so we confirm that we can legally prepare a return for you before we take it on. If we cannot, we tell you before you pay or send documents. Our Longwood, Florida office works remotely, and a real preparer reviews and signs every return we do prepare.

FAQ

Nearby state guides

Sources

• portal.ct.gov/drs/individuals/resident-income-tax/tax-information
• portal.ct.gov/-/media/drs/forms/2025/income/2025-ct-1040-instructions_1225.pdf
• portal.ct.gov/drs/news---press-releases/2018/2018-latest-news/drs-now-accepting-
• irs.gov/filing/individuals/when-to-file

General information, not tax advice for your specific situation. Rules can change, so check the official sources below. Zero Fuss Taxes is a PTIN-holding tax preparation firm. We are not a CPA firm, enrolled agents or attorneys.